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Finding the Fourth Proportional to 14,415.37, 19,893.90 and 8,449.09

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Solution

The fourth proportional to 14,415.37, 19,893.90 and 8,449.09 is: 11,660.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,415.37 : 19,893.90 = 8,449.09 : x
  2. Step 2: Convert to fraction form
    14,415.37/19,893.90 = 8,449.09/x
  3. Step 3: Cross multiply
    14,415.37x = 19,893.90 × 8,449.09
  4. Step 4: Simplify right side
    14,415.37x = 168,085,351.55
  5. Step 5: Solve for x
    x = 168,085,351.55/14,415.37
  6. Step 6: Final answer
    x = 11,660.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.